Ruark, Arthur Edard . <br/><br/>
Atoms, Molecules and Quanta: Vol.I /  Textual Documents 
Arthur Edard Ruark & H.C. Urey. 
 - 2nd ed. / 
 - New York :  McGraw - Hill book company ,  1930. 
 - 790p. ;  24cm. 
<br/><br/><label>Subjects--Index Terms: </label>Atoms Molecules Quanta G-Physics 
<br/><br/><label>Dewey Class. No.: </label>539.81  / R 821 At